Digital Photo Frame - Big Screen Size

I'm looking to purchase a good quality, decent size digital photo frame for my house. Not sure which one should I go for. I'm looking for good features (should be able to copy files from my camera or PC, if possible should have wifi, good storage capacity, above all, good picture quality & nice to look at, from a reputed company) in a big size photo frame, minimum 12 inch size. I'm ready to spend up to £500 (I live in UK)